检索结果-内蒙古大学图书馆

arXiv 2019年

作者： Zhao, Na Li, Jie Wang, Jian Li, Tong Yu, Yong Zhou, Tao Key Laboratory in Software Engineering of Yunnan Province School of Software Yunnan University Kunming650091 China Electric Power Research Institute of Yunnan Power Grid Kunming650217 China College of Information Engineering and Automation Kunming University of Science and Technology Kunming650504 China School of Big Data Yunnan Agricultural University Kunming650201 China CompleX Lab University of Electronic Science and Technology of China Chengdu611471 China

Heterogeneous nature of real networks implies that different edges play different roles in network structure and functions, and thus to identify significant edges is of high value in both theoretical studies and practical applications. We propose the so-called second-order neighborhood (SN) index to quantify an edge's significance in a network. We compare SN index with many other benchmark methods based on 15 real networks via edge percolation. Results show that the proposed SN index outperforms other well-known methods. Copyright © 2019, The Authors. All rights reserved.

关键词： Solvents

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Overview of Radon Background Correction technology for Airborne Gamma Spectrometry

引用

IOP Conference Series: Earth and Environmental Science 2019年第1期281卷

作者： Chenhao Zeng Wanchang Lai Xiaojie Feng Chen Fan Jinfei Wu Runqiu Gu The College of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu 610059 Sichuan China Dept. of Military Installation Army Logistical University of PLA Chongqing 401311 China School of Control Engineering Chengdu University of Information Technology Chengdu 610225 Sichuan China Radiation Detection & Protection Institute of Nuclear Industry Chengdu 610503 Sichuan China

In radiometric measurements, the radiation characteristics of radon and its daughters will increase the detection background value and affect the detection results. Research institutes in various regions of the world have studied the effects of radon and its daughters, and have done a lot of work according to the special climate, geological conditions and characteristics of radioactive events in their regions. In the view of the influence of radon background in airborne gamma-ray spectrometry measurement, this paper summarizes the research results of radon background correction in gamma-ray spectrometry measurement from three aspects in the world scope: environmental radiation monitoring, radiation monitoring instruments and nuclear emergency monitoring. In the aspect of environmental radiation monitoring, the research unit mainly considers the climatic factors such as rainfall, temperature and humidity, atmospheric and hydrological changes and seasonal changes, geological factors such as altitude, mineral types, and measurement means such as alpha measurement and inverse derivation gamma measurement. In terms of radiation monitoring instruments, radon and its daughters are mainly considered to reduce the impact and improve the measurement accuracy. In the aspect of nuclear emergency monitoring, the main consideration is how to improve the accuracy of measurement and avoid false alarm. On this basis, the research trend and development direction of radon background correction in airborne gamma-ray spectrometry are put forward.

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Discovery of a new γ-ray source LHAASO J0341+5258 with emission up to 200TeV

arXiv

引用

arXiv 2021年

作者： Cao, Zhen Aharonian, F. An, Q. Axikegu Bai, L.X. Bai, Y.X. Bao, Y.W. Bastieri, D. Bi, X.J. Bi, Y.J. Cai, H. Cai, J.T. Cao, Zhe Chang, J. Chang, J.F. Chen, B.M. Chen, E.S. Chen, J. Chen, Liang Chen, Liang Chen, Long Chen, M.J. Chen, M.L. Chen, Q.H. Chen, S.H. Chen, S.Z. Chen, T.L. Chen, X.L. Chen, Y. Cheng, N. Cheng, Y.D. Cui, S.W. Cui, X.H. Cui, Y.D. D’Ettorre Piazzoli, B. Dai, B.Z. Dai, H.L. Dai, Z.G. Danzengluobu della Volpe, D. Dong, X.J. Duan, K.K. Fan, J.H. Fan, Y.Z. Fan, Z.X. Fang, J. Fang, K. Feng, C.F. Feng, L. Feng, S.H. Feng, Y.L. Gao, B. Gao, C.D. Gao, L.Q. Gao, Q. Gao, W. Ge, M.M. Geng, L.S. Gong, G.H. Gou, Q.B. Gu, M.H. Guo, F.L. Guo, J.G. Guo, X.L. Guo, Y.Q. Guo, Y.Y. Han, Y.A. He, H.H. He, H.N. He, J.C. He, S.L. He, X.B. He, Y. Heller, M. Hor, Y.K. Hou, C. Hu, H.B. Hu, S. Hu, S.C. Hu, X.J. Huang, D.H. Huang, Q.L. Huang, W.H. Huang, X.T. Huang, X.Y. Huang, Z.C. Ji, F. Ji, X.L. Jia, H.Y. Jiang, K. Jiang, Z.J. Jin, C. Ke, T. Kuleshov, D. Levochkin, K. Li, B.B. Li, Cheng Li, Cong Li, F. Li, H.B. Li, H.C. Li, H.Y. Li, J. Li, K. Li, W.L. Li, X.R. Li, Xin Li, Xin Li, Y. Li, Y.Z. Li, Zhe Li, Zhuo Liang, E.W. Liang, Y.F. Lin, S.J. Liu, B. Liu, C. Liu, D. Liu, H. Liu, H.D. Liu, J. Liu, J.L. Liu, J.S. Liu, J.Y. Liu, M.Y. Liu, R.Y. Liu, S.M. Liu, W. Liu, Y. Liu, Y.N. Liu, Z.X. Long, W.J. Lu, R. Lv, H.K. Ma, B.Q. Ma, L.L. Ma, X.H. Mao, J.R. Masood, A. Min, Z. Mitthumsiri, W. Montaruli, T. Nan, Y.C. Pang, B.Y. Pattarakijwanich, P. Pei, Z.Y. Qi, M.Y. Qi, Y.Q. Qiao, B.Q. Qin, J.J. Ruffolo, D. Rulev, V. Sáiz, A. Shao, L. Shchegolev, O. Sheng, X.D. Shi, J.Y. Song, H.C. Stenkin, Yu.V. Stepanov, V. Su, Y. Sun, Q.N. Sun, X.N. Sun, Z.B. Tam, P.H.T. Tang, Z.B. Tian, W.W. Wang, B.D. Wang, C. Wang, H. Wang, H.G. Wang, J.C. Key Laboratory of Particle Astrophyics & Experimental Physics Division & Computing Center Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China University of Chinese Academy of Sciences Beijing100049 China TIANFU Cosmic Ray Research Center Sichuan Chengdu China Dublin Institute for Advanced Studies 31 Fitzwilliam Place 2 Dublin Ireland Max-Planck-Institut for Nuclear Physics P.O. Box 103980 Heidelberg69029 Germany State Key Laboratory of Particle Detection and Electronics China University of Science and Technology of China Anhui Hefei230026 China School of Physical Science and Technology School of Information Science and Technology Southwest Jiaotong University Sichuan Chengdu610031 China College of Physics Sichuan University Sichuan Chengdu610065 China School of Astronomy and Space Science Nanjing University Jiangsu Nanjing210023 China Center for Astrophysics Guangzhou University Guangdong Guangzhou510006 China School of Physics and Technology Wuhan University Hubei Wuhan430072 China Key Laboratory of Dark Matter and Space Astronomy Purple Mountain Observatory Chinese Academy of Sciences Jiangsu Nanjing210023 China Hebei Normal University Hebei Shijiazhuang050024 China Key Laboratory for Research in Galaxies and Cosmology Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai200030 China Key Laboratory of Cosmic Rays [Tibet University Ministry of Education Tibet Lhasa850000 China National Astronomical Observatories Chinese Academy of Sciences Beijing100101 China Sun Yat-sen University Guangdong Zhuhai519000 China Dipartimento di Fisica dell’Università di Napoli ‘Federico II" Complesso Universitario di Monte Sant’Angelo via Cinthia Napoli80126 Italy School of Physics and Astronomy Yunnan University Yunnan Kunming650091 China D’epartement de Physique Nucl’eaire et Corpusculaire Facult’e de Sciences Universit’e de Genève 24 Quai Ernest Ansermet Geneva1211 Switzerland Institute o

We report the discovery of a new unidentified extended γ-ray source in the Galactic plane named LHAASO J0341+5258 with a pre-trial significance of 8.2 standard deviations above 25 TeV. The best fit position is R.A.= 55.34◦ ± 0.11◦ and Dec= 52.97◦ ± 0.07◦. The angular size of LHAASO J0341+5258 is 0.29◦ ± 0.06◦stat ± 0.02◦sys. The flux above 25 TeV is about 20% of the flux of Crab Nebula. Although a power-law fit of the spectrum from 10 TeV to 200 TeV with the photon index α = 2.98±0.19stat±0.02sys is not excluded, the LHAASO data together with the flux upper limit at 10 GeV set by the Fermi LAT observation, indicate a noticeable steepening of an initially hard power-law spectrum spectrum with a cutoff at ≈ 50 TeV. We briefly discuss the origin of UHE gamma-rays. The lack of an energetic pulsar and a young SNR inside or in the vicinity of LHAASO J0341+5258 challenge, but do not exclude both the leptonic and hadronic scenarios of gamma-ray production. Copyright © 2021, The Authors. All rights reserved.

关键词： Gamma rays

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Deep learning radiomics for assessment of gastroesophageal varices in people with compensated advanced chronic liver disease

arXiv

引用

arXiv 2023年

作者： Wang, Lan He, Ruiling Zhao, Lili Wang, Jia Geng, Zhengzi Ren, Tao Zhang, Guo Zhang, Peng Tang, Kaiqiang Gao, Chaofei Chen, Fei Zhang, Liting Zhou, Yonghe Li, Xin He, Fanbin Huan, Hui Wang, Wenjuan Liang, Yunxiao Tang, Juan Ai, Fang Wang, Tingyu Zheng, Liyun Zhao, Zhongwei Ji, Jiansong Liu, Wei Xu, Jiaojiao Liu, Bo Wang, Xuemei Zhang, Yao Yan, Qiong Lv, Muhan Chen, Xiaomei Zhang, Shuhua Wang, Yihua Liu, Yang Yin, Li Liu, Yanni Huang, Yanqing Liu, Yunfang Wang, Kun Su, Meiqin Bian, Li An, Ping Zhang, Xin Qian, Linxue Li, Shao Qi, Xiaolong Institute for TCM-X MOE Key Laboratory of Bioinformatics Bioinformatics Division BNRIST Department of Automation Tsinghua University Beijing China Department of Ultrasound Donggang Branch the First Hospital of Lanzhou University Lanzhou China The First Clinical Medical College of Lanzhou University Lanzhou China Department of Gastroenterology and Hepatology Tianjin Second People's Hospital Tianjin China Department of Ultrasound Beijing Friendship Hospital Capital Medical University Beijing China Department of Ultrasound The People's Hospital of Linxia Linxia China Department of Gastroenterology Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region Sichuan China Department of Gastroenterology The People's Hospital of Guangxi Zhuang Autonomous Region Nanning China Department of Control and Systems Engineering Nanjing University Nanjing China Department of Ultrasound The First Hospital of Lanzhou University Lanzhou China Department of Infectious Diseases The First Hospital of Lanzhou University Lanzhou China Department of Ultrasonography Tianjin Second People's Hospital Tianjin China Department of Infectious Disease Zigong First People's Hospital Zigong China Department of Ultrasound Zigong First People's Hospital Zigong China Department of Gastroscopy Zigong First People's Hospital Zigong China Department of Radiology Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research Fifth Affiliated Hospital of Wenzhou Medical University Lishui China Ultrasound Diagnosis Center Shaanxi Provincial People's Hospital Xi'An China Department of Ultrasound Ditan Hospital Capital Medical University Beijing China Department of Gastroenterology The Affiliated Hospital of Southwest Medical University Luzhou China Department of Ultrasound The Affiliated Hospital of Southwest Medical University Luzhou China Department of Ultrasound North China University of Science and Technology Affiliated Hospital Tangshan China Depar

Objective: Bleeding from gastroesophageal varices (GEV) is a medical emergency associated with high mortality. We aim to construct an artificial intelligence-based model of two-dimensional shear wave elastography (2D-SWE) of the liver and spleen to precisely assess the risk of GEV and high-risk gastroesophageal varices (HRV). Design: A prospective multicenter study was conducted in patients with compensated advanced chronic liver disease. 305 patients were enrolled from 12 hospitals, and finally 265 patients were included, with 1136 liver stiffness measurement (LSM) images and 1042 spleen stiffness measurement (SSM) images generated by 2D-SWE. We leveraged deep learning methods to uncover associations between image features and patient risk, and thus conducted models to predict GEV and HRV. Results: A multi-modality Deep Learning Risk Prediction model (DLRP) was constructed to assess GEV and HRV, based on LSM and SSM images, and clinical information. Validation analysis revealed that the AUCs of DLRP were 0.91 for GEV (95% CI 0.90 to 0.93, p Copyright © 2023, The Authors. All rights reserved.

关键词： Deep learning

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A Faster Fully Homomorphic Encryption Scheme in Big Data 2

A Faster Fully Homomorphic Encryption Scheme in Big Data

引用

2017 IEEE 2nd International Conference on Big Data Analysis（ICBDA 2017）

作者： Dan Wang Bing Guo Yan Shen Shun-Jun Cheng Yong-Hong Lin College of Computer Science Sichuan University School of Control Engineering Chengdu University of Information Technology School of Automation Engineering University of Electronic Science and Technology of China School of Software Chengdu Polytechnic

ISBN: (纸本)9781509036202

Nowadays privacy leakage related with big data spells big trouble for ***,we provide data security and privacy protection through encrypted data but at the expense of *** homomorphic encryption allows to perform unlimited chaining of mathematical operations on encrypted data making it possible for some legal companies and institutions to use *** to Gentry's scheme,fully homomorphic scheme over the integers can make complicated matters simplified but have not been widely applied due to the low *** this paper,a new improved FHE scheme based on DGHV scheme is *** reduce the public key size significantly by introducing a pseudo-random number generator and encrypting with a cubic form rather than a linear form in the public key elements,which makes our scheme more *** part of our work is proving the scheme is semantically secure under the error-free approximate GCD ***,we propose a system model in purpose of illustrating the practical application of FHE scheme in big data.

关键词： AGCD problem big data fully homomorphic encryption privacy protection

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Modernity Problems of Sandu Shui Nationality Needlework

Modernity Problems of Sandu Shui Nationality Needlework

引用

2017 the 3rd International Symposium on Social Science(ISSS 2017)

作者： Wenting Liu Art College of Sichuan University Applied Nuclear Technology and Automation Engineering College of Chengdu University of Technology

ISBN: (纸本)9781510841239

By taking Shui nationality needlework as the study case,this thesis observes the modernity problems of Shui nationality needlework from the perspective of the formation reasons of needlework modernity and the modernity features of *** points out the necessity of the formation of Shui nationality needlework modernity as a result of overlapping outcomes of natural geography,female identity,policy influences and other *** the modernity features of Shui nationality needlework characteristic of new intense national and visual life paradigm.

关键词： Sandu Shui nationality folk needlework modernity

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Toward a nuclear mass table with the continuum and deformation effects: Even-even nuclei in the nuclear chart

arXiv

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arXiv 2020年

作者： Zhang, Kaiyuan Cheoun, Myung-Ki Choi, Yong-Beom Chong, Pooi Seong Dong, Jianmin Geng, Lisheng Ha, Eunja He, Xiaotao Heo, Chan Ho, Meng Chit In, Eun Jin Kim, Seonghyun Kim, Youngman Lee, Chang-Hwan Lee, Jenny Li, Zhipan Luo, Tianpeng Meng, Jie Mun, Myeong-Hwan Niu, Zhongming Pan, Cong Papakonstantinou, Panagiota Shang, Xinle Shen, Caiwan Shen, Guofang Sun, Wei Sun, Xiang-Xiang Tam, Chi Kin Thaivayongnou Wang, Chen Wong, Sau Hei Xia, Xuewei Yan, Yijun Yeung, Ryan Wai-Yen Yiu, To Chung Zhang, Shuangquan Zhang, Wei Zhou, Shan-Gui State Key Laboratory of Nuclear Physics and Technology School of Physics Peking University Beijing100871 China Institute Soongsil University Seoul156-743 Korea Republic of Department of Physics Pusan National University Busan46241 Korea Republic of Department of Physics University of Hong Kong Pokfulam999077 Hong Kong Institute of Modern Physics Chinese Academy of Sciences Lanzhou730000 China School of Physics University of Chinese Academy of Sciences Beijing100049 China School of Physics and Nuclear Energy Engineering Beihang University Beijing100191 China College of Material Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing210016 China Department of Energy Science Sungkyunkwan University Suwon16419 Korea Republic of Rare Isotope Science Project Institute for Basic Science Daejeon305-811 Korea Republic of School of Physical Science and Technology Southwest University Chongqing400715 China Korea Institute of Science and Technology Information Daejeon34141 Korea Republic of School of Physics and Materials Science Anhui University Hefei230601 China Institute of Physical Science and Information Technology Anhui University Hefei230601 China Institute for Basic Science Rare Isotope Science Project Daejeon34000 Korea Republic of School of Science Huzhou University Huzhou313000 China CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing100190 China School of Physical Sciences University of Chinese Academy of Sciences Beijing100049 China School of Physics and Electronic Engineering Center for Computational Sciences Sichuan Normal University Chengdu610068 China School of Physics and Microelectronics Zhengzhou University Zhengzhou450001 China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator Lanzhou730000 China Synergetic Innovation Center for Quantum Effects and Application Hunan Normal University Changsha410

Background: The study of exotic nuclei far from the β stability line is stimulated by the development of radioactive ion beam facilities worldwide and brings opportunities and challenges to existing nuclear theories. Including self-consistently the nuclear superfluidity, deformation, and continuum effects, the deformed relativistic Hartree-Bogoliubov theory in continuum (DRHBc) has turned out to be successful in describing both stable and exotic nuclei. Due to several challenges, however, the DRHBc theory has only been applied to study light nuclei so far. Purpose: The aim of this work is to develop the DRHBc theory based on the point-coupling density functionals and extend it to provide a unified description for all even-even nuclei in the nuclear chart by overcoming all possible challenges. Method: The nuclear superfluidity is taken into account via Bogoliubov transformation. Densities and potentials are expanded in terms of Legendre polynomials to include the axial deformation degrees of freedom. Sophisticated relativistic Hartree-Bogoliubov equations in coordinate space are solved in the Dirac Woods-Saxon basis to consider the continuum effects. Results: Numerical checks for energy cutoff, angular momentum cutoff, Legendre expansion, pairing strength, and (un)constrained calculations are performed from light nuclei to heavy nuclei. Combined with the successful density functional PC-PK1, ground-state properties of even-even Nd isotopes are obtained using the developed theory and compared with the spherical nuclear mass table based on the relativistic continuum Hartree-Bogoliubov (RCHB) theory as well as the data available. The calculated binding energies are in very good agreement with the existing experimental values with a rms deviation of 0.958 MeV, which is remarkably smaller than 8.301 MeV in the spherical case. Meanwhile, a better reproduction of two-neutron separation energies is obtained. The experimental quadrupole deformations and charge radii are also

关键词： Degrees of freedom (mechanics)

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Deformed relativistic Hartree-Bogoliubov theory in continuum with a point-coupling functional: Examples of even-even Nd isotopes

引用

Physical Review C 2020年第2期102卷 024314-024314页

作者： Kaiyuan Zhang (张开元) Myung-Ki Cheoun Yong-Beom Choi Pooi Seong Chong Jianmin Dong (董建敏) Lisheng Geng (耿立升) Eunja Ha Xiaotao He (贺晓涛) Chan Heo Meng Chit Ho Eun Jin In Seonghyun Kim Youngman Kim Chang-Hwan Lee Jenny Lee Zhipan Li (李志攀) Tianpeng Luo (骆天鹏) Jie Meng (孟杰) Myeong-Hwan Mun Zhongming Niu (牛中明) Cong Pan (潘琮) Panagiota Papakonstantinou Xinle Shang (尚新乐) Caiwan Shen (沈彩万) Guofang Shen (申国防) Wei Sun (孙玮) Xiang-Xiang Sun (孙向向) Chi Kin Tam Thaivayongnou Chen Wang (王晨) Sau Hei Wong Xuewei Xia (夏学伟) Yijun Yan (晏一珺) Ryan Wai-Yen Yeung To Chung Yiu Shuangquan Zhang (张双全) Wei Zhang (张炜) Shan-Gui Zhou (周善贵) State Key Laboratory of Nuclear Physics and Technology School of Physics Peking University Beijing 100871 China Department of Physics and Origin of Matter and Evolution of Galaxy (OMEG) Institute Soongsil University Seoul 156-743 Korea Department of Physics Pusan National University Busan 46241 Korea Department of Physics The University of Hong Kong Pokfulam 999077 Hong Kong Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China School of Physics University of Chinese Academy of Sciences Beijing 100049 China School of Physics Beihang University Beijing 102206 China College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China Department of Energy Science Sungkyunkwan University Suwon 16419 Korea Rare Isotope Science Project Institute for Basic Science Daejeon 305-811 Korea School of Physical Science and Technology Southwest University Chongqing 400715 China Korea Institute of Science and Technology Information Daejeon 34141 Korea School of Physics and Materials Science Anhui University Hefei 230601 China Institute of Physical Science and Information Technology Anhui University Hefei 230601 China Institute for Basic Science Rare Isotope Science Project Daejeon 34000 South Korea School of Science Huzhou University Huzhou 313000 China CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100190 China School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 China School of Physics and Electronic Engineering Center for Computational Sciences Sichuan Normal University Chengdu 610068 China School of Physics and Microelectronics Zhengzhou University Zhengzhou 450001 China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator Lanzhou 730000 China Synergetic Innovation Center for Quantum Effects and Application Hunan Normal University Changsha 410081 China

关键词： Binding energy & masses Charge distributions Energy levels & level densities nuclear structure & decays nuclear many-body theory

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An Ultra-Short-Term Pre-Plan Power Curve based Smoothing Control Approach for Grid-connected Wind-Solar-Battery Hybrid Power System

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IFAC-PapersOnLine 2017年第1期50卷 7711-7716页

作者： Peng C. Zou J. Zhang Z. Han L. Liu M. School of Automation Engineering University of Electronic Science and Technology of China Chengdu 611731 China College of Electrical & Information Engineering Southwest University for Nationalities Chengdu 610041 China

Recently, wind-solar-battery hybrid power generation has become one of the most popular methods to tackle the grid integrating problem of wind and solar power. A novel ultra-short-term pre-plane power curve based smoothing control approach is proposed for grid-connected wind-solar-battery hybrid power system (WSBHPS). A pre-plan power curve based scheduling module, which takes the grid limitation of maximum powers fluctuation, maximizing wind and solar power utilization and reducing use of battery energy storage system(BESS) as objectives, is designed according to ultra-short-term prediction information of wind and solar power and state of charging (SOC) of BESS. A real-time power fluctuation compensation module is designed based on weighted moving average filtering algorithm to smooth power fluctuation in real time. The results of simulation experiments show that the proposed approach could not only reduce the use of BESS, but also has better smoothing effectiveness compared with traditional low filter based smoothing control approach. © 2017

关键词： Pre-plan power curve real time power fluctuation compensation ultra-short-term power prediction Wind-solar-battery storage hybrid power system

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A method of reconstructing complex stratigraphic surfaces with multitype fault constraints

引用

applied Geophysics 2017年第2期14卷 195-204,322页

作者： Deng Shi-Wu Jia Yu Yao Xing-Miao Liu Zhi-Ning School of Nuclear Technology and Automation Engineering Chengdu University of Technology Chengdu 610059 China School of Resources and Environment University of Electronic and Technology of China Chengdu 611731 China.

The construction of complex stratigraphic surfaces is widely employed in many fields, such as petroleum exploration, geological modeling, and geological structure analysis. It also serves as an important foundation for data visualization and visual analysis in these fields. The existing surface construction methods have several deficiencies and face various difficulties, such as the presence of multitype faults and roughness of resulting surfaces. In this paper, a surface modeling method that uses geometric partial differential equations （PDEs） is introduced for the construction of stratigraphic surfaces. It effectively solves the problem of surface roughness caused by the irregularity of stratigraphic data distribution. To cope with the presence of multitype complex faults, a two-way projection algorithm between three- dimensional space and a two-dimensional plane is proposed. Using this algorithm, a unified method based on geometric PDEs is developed for dealing with multitype faults. Moreover, the corresponding geometric PDE is derived, and an algorithm based on an evolutionary solution is developed. The algorithm proposed for constructing spatial surfaces with real data verifies its computational efficiency and its ability to handle irregular data distribution. In particular, it can reconstruct faulty surfaces, especially those with overthrust faults.

关键词： Partial differential equation surface reconstruction interpolation fault meshing

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